From: Dan Williams Date: Thu, 28 Jul 2016 22:48:11 +0000 (-0700) Subject: mm: cleanup ifdef guards for vmem_altmap X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=11db04864336f20e19e16b64ade781eeefc3f6d3;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git mm: cleanup ifdef guards for vmem_altmap Now that ZONE_DEVICE depends on SPARSEMEM_VMEMMAP we can simplify some ifdef guards to just ZONE_DEVICE. Link: http://lkml.kernel.org/r/146687646788.39261.8020536391978771940.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams Reported-by: Vlastimil Babka Cc: Eric Sandeen Cc: Jeff Moyer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/linux/memremap.h b/include/linux/memremap.h index bcaa634139a9..93416196ba64 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -26,7 +26,7 @@ struct vmem_altmap { unsigned long vmem_altmap_offset(struct vmem_altmap *altmap); void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns); -#if defined(CONFIG_SPARSEMEM_VMEMMAP) && defined(CONFIG_ZONE_DEVICE) +#ifdef CONFIG_ZONE_DEVICE struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start); #else static inline struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start) diff --git a/kernel/memremap.c b/kernel/memremap.c index 017532193fb1..ddb3247a872a 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -308,12 +308,6 @@ void *devm_memremap_pages(struct device *dev, struct resource *res, if (is_ram == REGION_INTERSECTS) return __va(res->start); - if (altmap && !IS_ENABLED(CONFIG_SPARSEMEM_VMEMMAP)) { - dev_err(dev, "%s: altmap requires CONFIG_SPARSEMEM_VMEMMAP=y\n", - __func__); - return ERR_PTR(-ENXIO); - } - if (!ref) return ERR_PTR(-EINVAL); @@ -401,7 +395,6 @@ void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns) altmap->alloc -= nr_pfns; } -#ifdef CONFIG_SPARSEMEM_VMEMMAP struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start) { /* @@ -427,5 +420,4 @@ struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start) return pgmap ? pgmap->altmap : NULL; } -#endif /* CONFIG_SPARSEMEM_VMEMMAP */ #endif /* CONFIG_ZONE_DEVICE */